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founded 1 year ago
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51
 
 

Hey peeps, it was just brought to my attention that Tesseract has been discontinued. I was one of the few instances which was hosting Tesseract as it had some integrations with Fediseer but unfortunately it seems I need to remove it.

I decided to replace it with Voyager instead. I'm going to leave things up for a day or so to let you update your bookmarks, but soon t.lemmy.dbzer0.com and tesseract.lemmy.dbzer0.com will be removed and v. and voyager. will be added.

52
 
 

I have now upgraded the Divisions by zero to Lemmy 0.19.0. I haven't seen any issues, but of course you will have to re-login.

Please check the new features here

I have also updated Pythörhead to be able to handle the new authentication (as well as the old), so if you're running a bot, make sure to update your Pythörhead dependencies.

Now is also a good time that you can support the running of this server. If you just want to support this instance, please use Ko-fi and you can get a custom emoji here. If you want to support my general development efforts as well (Lemmy, Pythorhead, Fediseer, Tagginator etc) feel free to use my liberapay

53
 
 

I am working on my dev instance. Once that plays out OK, I'll need to update pythorhead to handle the new authentication, then I'll be upgrading this instance to 0.19.0.

I don't have an exact time, so if you see this instance down for a bit, you know what's up. You know how it is here...

54
 
 

I want to make our little corner of the fediverse a bit more unique, so I thought it might be a cool idea to take some classic memes and use the AI Horde to customize them for our respective themes.

First one I started is "You have no power here" which I wanted to post multiple times as a response for someone moralizing about piracy or anarchism etc

I have thus created two versions of it.

:nopower_hacker:

An old graybeard hacker laughing. Text saying "you have no power here".

:nopower_pirate:

An old graybeard pirate laughing. Text saying "you have no power here".

Please suggest other meme templates you think would fit into this space and I will do myself to create versions to use here.

55
 
 

Our little instance is closing to 6 months of operations and it occurs to me I never really asked for some open feedback from our peeps. So I wanted to start a discussion to see your concerns and comments in general. So tell me, in the context of the divisions by zero, what bothers you, what pleases you, what would you like to see improved.

Feel free to share your thoughts about anything.

56
 
 

Am i missing something or is lemmy ignoring the chosen filters(community, activity, page) when im returning from a post back to the list of posts(using the back button)? The filters themselves are selected but the content isnt filtered.

57
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submitted 10 months ago* (last edited 10 months ago) by [email protected] to c/[email protected]
 
 

It seems image uploads are not working atm. I contacted my Object Storage provider about it and will keep in in the loop

58
4
submitted 10 months ago* (last edited 10 months ago) by [email protected] to c/[email protected]
 
 

EDIT: Looks like the defederation has been reversed. @db0 Thank you for looking into this quickly.


A commenter in the linked post is suggesting that dbzer0 automatically follows lemmy.world's block list. That seems like kind of a bad idea? In this instance it seems like the LW admins are just following the decision of lemmy.ml's tankie admins, and tankies gonna tank.

59
 
 

The error:

Here's the image I was trying to upload: (uploaded thru imgur)

I was trying to upload the image to c/[email protected]

I found a github issue for this, but the discussion seems to point towards it being on your end or lemmy.world's end.

60
 
 

I am excited to announce that I have just finished deploying a new wiki service tied to lemmy.dbzer0.com.

https://wiki.dbzer0.com (Ignore the certificate errors for now, it some leftovers from the downtime yesterday. Will be fixed soon)

The most cool part of this setup, is that while anyone can read, only users who have an account in lemmy.dbzer0.com can edit. This should nicely prevent spammers from causing issues, and can help us tie edits to accounts here. if your account gets banned in lemmy.dbzer0.com, you also lose access to edit the wiki as well!

To manage that, you simply need to register an account on the wiki, then write that account on your bio here. The frontpage of the wiki provides the relevant instructions.

So if you needed a place to add official pages about your community with info, now you have the place!

61
 
 

Just a quick update for people using pict-rs workers, to grab the latest release, and set the 2 new variables as they want them

SCAN_BYPASS_THRESHOLD (default 10): If this amount of images are waiting for scanning, pictrs-safety will start retuning "OK" for each new scan after that. This will prevent overloaded workers causing all further uploads from bouncing.

MISSING_WORKER_THRESHOLD (default 5): If this amount of seconds have passed since a scanning worker last checked in, start returning "OK" for each new scan after that. This will prevent a crashed worker from causing all images to bounce.

You can set either of these to 0 to turn off their functionality

62
 
 

In the past months, there's a been a issue in various instances where accounts would start uploading blatant CSAM to popular communities. First of all this traumatizes anyone who gets to see it before the admins get to it, including the admins who have to review to take it down. Second of all, even if the content is a link to an external site, lemmy sill caches the thumbnail and stores it in the local pict-rs, causing headaches for the admins who have to somehow clear that out. Finally, both image posts and problematic thumbnails are federated to other lemmy instances, and then likewise stored in their pict-rs, causing such content to be stored in their image storage.

This has caused multiple instances to take radical measures, from defederating liberaly, to stopping image uploads to even shutting down.

Today I'm happy to announce that I've spend multiple days developing a tool you can plug into your instance to stop this at the source: pictrs-safety

Using a new feature from pictr-rs 0.4.3 we can now cause pictrs to call an arbitary endpoint to validate the content of an image before uploading it. pictrs-safety builds that endpoint which uses an asynchronous approach to validate such images.

I had already developed fedi-safety which could be used to regularly go through your image storage and delete all potential CSAM. I have now extended fedi-safety to plug into pict-rs safety and scan images sent by pict-rs.

The end effect is that any images uploaded or federated into your instance will be scanned in advance and if fedi-safety thinks they're potential CSAM, they will not be uploaded to your image storage at all!

This covers three important vectors for abuse:

  • Malicious users cannot upload CSAM to for trolling communities. Even novel GenerativeAI CSAM.
  • Users cannot upload CSAM images and never submit a post or comment (making them invisible to admins). The images will be automatically rejected during upload
  • Deferated images and thumbnails of CSAM will be rejected by your pict-rs.

Now, that said, this tool is AI-driven and thus, not perfect. There will be false positives, especially around lewd images and images which contain children or child-topics (even if not lewd). This is the bargain we have to take to prevent the bigger problem above.

By my napkin calculations, false positive rates are below 1%, but certainly someone's innocent meme will eventually be affected. If this happen, I request to just move on as currently we don't have a way to whitelist specific images. Don't try to resize or modify the images to pass the filter. It won't help you.

For lemmy admins:

  • pictrs-safety contains a docker-compose sample you can add to your lemmy's docker-compose. You will need to your put the .env in the same folder, or adjust the provided variables. (All kudos to @[email protected] for the docker support).
  • You need to adjust your pict-rs ENVIRONMENT as well. Check the readme.
  • fedi-safety must run on a system with GPU. The reason for this is that lemmy provides just a 10-seconds grace period for each upload before it times out the upload regardless of the results. A CPU scan will not be fast enough. However my architecture allows the fedi-safety to run on a different place than pictrs-safety. I am currently running it from my desktop. In fact, if you have a lot of images to scan, you can connect multiple scanning workers to pictrs-safety!
  • For those who don't have access to a GPU, I am working on a NSFW-scanner which will use the AI-Horde directly instead and won't require using fedi-safety at all. Stay tuned.

For other fediverse software admins

fedi-safety can already be used to scan your image storage for CSAM, so you can also protect yourself and your users, even on mastodon or firefish or whatever.

I will try to provide real-time scanning in the future for each software as well and PRs are welcome.

Divisions by zero

This tool is already active now on divisions by zero. It's usage should be transparent to you, but do let me know if you notice anything wrong.

Support

If you appreciate the priority work that I've put in this tool, please consider supporting this and future development work on liberapay:

https://liberapay.com/db0/

All my work is and will always be FOSS and available for all who need it most.

63
 
 

After lemmy.fmhy.ml shut down due to Mali just withdrawing all domains without notice, their new site never quite got the same traction as the old one, and it seems the technical issues kept piling up as well, including a catastrophic failure of a VM or something I think.

Today it seems their admins decided to throw in the towel, and are migrating to the divisions by zero as their primary home.

64
65
 
 

mlmym (AKA old reddit style)

  • old.lemmy.dbzer0.com
  • mlmym.lemmy.dbzer0.com

Photon

  • p.lemmy.dbzer0.com
  • photon.lemmy.dbzer0.com

Alexandrite

  • a.lemmy.dbzer0.com
  • alexandrite.lemmy.dbzer0.com

Tesseract

  • t.lemmy.dbzer0.com
  • tesseract.lemmy.dbzer0.com

That should give you plenty of option to use whatever look you prefer for this lemmy instance

And remember, if you appreciate the work I'm putting into this, please do consider helping cover the infrastructure costs by buying me a grog

66
 
 

Use it to track whether this website or the fediseer is down.

67
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Alternative frontends? (lemmy.dbzer0.com)
submitted 1 year ago* (last edited 1 year ago) by [email protected] to c/[email protected]
 
 

I just saw that FMHY got some new frontends for their users (Alexandrite, mlmym and Voyager) and I was wondering if there are any plans on doing something similar? Right now I'm using the default Alexandrite instance to access Lemmy, but I'd feel a lot safer not having to share my credentials with a third-party hosted by god knows who.

68
 
 

Some of you may have noticed a lot of people freaking out about CSAM and a bunch of communities closing, instances restricting registrations, turning off image uploads or shutting down completely. It's a bit of a chaos.

Fortunately your admin has been fighting this fight for the past year so I have developed some tools to help me out. I repurposed one of them to cover lemmy images

Using this approach, I've now turned on automatic scanning of new uploads.

What this means for you is that occasionally you will upload an image for a post and it will stop working after a bit. C'est la vie. Just upload something else. Changing format or slightly altering the image won't help you.

Also, sometimes you might see missing thumbnails on post from other communities. Those were the cached thumbnails hosted by us. The original images should still work in those cases.

Unfortunately this sort of AI scanning is not perfect and due to the nature of the beast, it will catch more false positives but to an acceptable degree. But I find that this is OK for a small social network site run as a hobby project.

Cool? Cool.

69
 
 

Hey mateys, as I mentioned earlier I have been forced to migrate the Database to a new server as it grew out of the previous location I had it.

This is why we had around 20 minutes downtime just now. Fortunately this is the only downtime I've had to do so things seem to be running smoothly. Likewise we've fortunately been spared from fediverse drama lately, so the personal time requirements are still low.

The new database also gives us plenty of space to grow so things should stay stable for a while until I have to consider more upgrades. Unfortunately it also means that the cost of running this instance have also increased, so I'm increasing the 6-months goal I've set.

Please consider donating a grog or subscribing to the instance costs here: https://ko-fi.com/db0/goal?g=77 and you can get you own personal custom emoji for your troubles :)

70
 
 

Hey peeps. Our little instance is getting a bit too big for its current DB hardware, so I am forced to start preparing a new DB server. This will lead to some downtime soon while I migrate the database over. Please bear with us if this instance goes offline for a bit in a couple hours.

Another announcement will arrive when I'm done

71
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submitted 1 year ago* (last edited 1 year ago) by [email protected] to c/[email protected]
 
 

[email protected]

View on LW

View on db0

Notice how the comments aren't loading, the pins aren't pinned, and the upvotes aren't equal. There aren't any comments if I try to view them from the db0 instance. Is there a reason that this instance isn't grabbing my communities' info from LW?

72
 
 

FINAL-EDIT: I'm not sure what was the original issue, but tweaking uMatrix setting fixed it for me and it's also working for the user that reported the problem.

EDIT: It may be an issue with (the many plugins I have on) Firefox, it works on MsEdge. I will try to debug it a bit more.

Example: this post image is visible from lemm.ee and mlmym.org/lemm.ee

But not from lemmy.dbzer0.com

I tried with these 2 links and none of them work:

There are other examples on the same community:
https://lemmy.dbzer0.com/c/imaginarywitches

Thanks

73
 
 

A new lemmy version has just been published and this time I'm right on it! It's now live on the Divisions by zero

74
 
 

My feed is infested of communities from this server that posts are from bots

75
 
 

Rammy.site has been overrun by bigots from exploding-heads they are posting transphobic content accusing LGBT people of being groomers and also posting climate denial. They're likely posting here because it is a small instance with an Admin who is currently MIA and/or not moderating the instance. For this reason it is imperative that it be defederated to stop these bigots from using it to spread their hate to other instances.

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